<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>按钮  </title>
	<link rel="stylesheet" type="text/css" href="abc.css">
	<style>
	</style>
</head>

<body>
<div id="a" >
	<button class="a" >苹果</button>
	</div>
<div id="b">
<button class="b">西瓜</button>
</div>
	
<div id="c">
<button class="c">菠萝</button>
</div>
	
<div id="d">
<button class="d">草莓</button>
</div>
</body>

</html>